Headphone



FIG. 1 is a front, top, and left perspective view of headphone showing my new design;

FIG. 2 is rear, bottom, and left perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a left side view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

The broken lines immediately adjacent the shaded areas represent the bounds of the claimed design while all other broken lines depict portions of the headphones that form no part of the claimed design; all broken lines form no part of the claimed design. 

CLAIM The ornamental design for headphone, as shown and described. 